Here's the definition that's on our security deposit page, which doesn't get into the nitty-gritty: Normal wear and tear is a term that Wisconsin law does not define.
(3)Protein Fat-Free Percentage, Protein Fat-Free Content, PFF Percentage, PFF Content or PFF of a product means the meat protein (indigenous to the raw, unprocessed pork cut) content expressed as a percent of the non-fat portion of the finished product.
The following foods are considered PHF and require proper control of time and temperature: 1  Milk and dairy products. 2  Eggs (except those treated to eliminate microorganisms) 3  Meat (beef, pork and lamb) 4  Poultry. Fish and shellfish.  Baked 1  Potatoes. Heat-treated plant foods (rice, beans, and vegetables)  Tofu and other soy proteins.